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Odometry Not working properly

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odometryflight-deckmavros
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  • A Offline
    A Offline
    abdullah
    wrote on last edited by
    #1

    Hello,
    I have been testing voxl for a while everything was working properly. But in one flight drone odometery started showing unusual readings.

    I was flying the drone in manual mode and it flew properly. Than I landed the drone and switched to position mode and started to monitor the odometery in QGroundControl and in mavros. When the drone is not armed the odometery value are near to 0 which is correct . But as soon as it is armed The odometery gets haywire. The drone is just armed and is on the ground but orometery show it is 40meters in the air or sometimes is below ground and the values keep on increasing.

    I re-calibrated the drone's optical flow sensor as well as the imu but the problem still persist.

    Than I tried the dry run just turning on the voxl and lifting up the drone with the hand and moving around. for reasons unknown the odometery works properly.
    So I tried it again to arm the drone and watch the odometery and its started to act weirdly again.

    If anyone have any clue why is it acting like this or might have encountered similar problem please do help.
    Any input is appreciated.

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    • Chad SweetC Offline
      Chad SweetC Offline
      Chad Sweet
      ModalAI Team
      wrote on last edited by
      #2

      That sounds like a vibration issue. Has.l anything changed mechanically?

      A good way to debug vibration is to look at the px4 logs. If you upload to review.px4.io there are nice IMU vibration graphs

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      • A Offline
        A Offline
        abdullah
        wrote on last edited by
        #3

        We have been testing on the same configuration for a while and never had that problem. We tried with position mode and off-board mode as well everything worked fine and have not made any changes in configuration.

        Enclosed is the log of the recent flight. We might be missing something. Your insight is needed

        Link Preview Image
        Flight Review

        favicon

        (review.px4.io)

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        • modaltbM Offline
          modaltbM Offline
          modaltb
          ModalAI Team
          wrote on last edited by modaltb
          #4

          Hi @abdullah ,

          Was the PX4 FW version changed at any point? We have seen some performance issues with PX4 1.11 and the position controller. I see in your logs you have v1.11.2 going.

          Is there anyway to load the ModalAI 1.10 FW as a data point and see if the flight performance changes?

          Link Preview Image
          Flight Core Firmware

          ModalAI technical documentation for VOXL and VOXL 2 Companion Computers for PX4 and ArduPilot Obstacle Avoidance and GPS-denied navigation, assembled in the USA

          favicon

          ModalAI Technical Docs (docs.modalai.com)

          Thanks!

          A 1 Reply Last reply
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          • modaltbM modaltb

            Hi @abdullah ,

            Was the PX4 FW version changed at any point? We have seen some performance issues with PX4 1.11 and the position controller. I see in your logs you have v1.11.2 going.

            Is there anyway to load the ModalAI 1.10 FW as a data point and see if the flight performance changes?

            Link Preview Image
            Flight Core Firmware

            ModalAI technical documentation for VOXL and VOXL 2 Companion Computers for PX4 and ArduPilot Obstacle Avoidance and GPS-denied navigation, assembled in the USA

            favicon

            ModalAI Technical Docs (docs.modalai.com)

            Thanks!

            A Offline
            A Offline
            abdullah
            wrote on last edited by
            #5
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